Draft and buffing gear for cars.



l Allarm;

MQ A. GABRBTT. l DRAFT AND BUFFING GEAR FOR GARS. y

LP-PLIULTION FILED HAR. 7, 1908.

Patented June'29, 1909.

M, A. BARRETT. DRAFT .um Burma GEAR Fon aus.

. APPLICATION FILED MAIL?, 190B.

""xy MHH UNITED STATES PATENT OFFICE.

MYERS A. GARRETT, OF GHICAGO,1LLINO1S DRAFT AND BUFFING GEAR FORSpecifica lon o! Letters Potent.

Patented .Tune 29, 1909.

l, j Application llled March 7, 1903. Serial No. 410,788.

1 tion. 1 V

The object-of my invention is the rovir-,aion of a. gear for taking and.absor ing;I the in len th; tyre;

'elned frictionzl surface; 20, pince .strains and shocks incideiipoboiling and towing mainly through the medium o tric tional surfaces orelements movable one n pon another, and which preferably shall besupplemented by a cushioning device or flevices for takmg theinitialstrains. The invention consists in certain :nivelties ofconstruction and combinatie of ports as hereinafter set forth andclaimed.

The accom anying drawingillustrates an example of t le physicalembodiment ol' the invention constructed accordingl to the liest mode Ihave so far devised for the praal ical .apflication of the principle.25. 4

f 'is o. section taken in a vertical lplanc on the igurel is a top planof the gear. Fig. 2

line a:-, Fig. 1. Fig. 3 is a an of ono of the cheek plates and shows te relativo arra-n ement and location of the slots in the dringt sills orsupports, and the cheek plates. Fig. 4 is a plan of one of the draft.links. Fig. 5 is a horizontal section of Fig. 2 taken oma. planesubstantially coiucidix with the drn* bai, keys and slots in tio centralstrin ers.

,Re erring to the figures, the numeral 1 desi natesan end sill of a. carfloor frame; 2, e center sills or stx-in cra, in this insten-ce ofchannel beams, t cogli they naf' be of other shape in cross section' 3,che plateet secured by rivets to the wells of the channel beams; 4, afront slot in the web of each channel beam and cheek plate Si in length"V5, a. second Slot. 4" in length; (i, o anni sin ses" in leugen r, aanna an a" a draw bar of any atpprovecl a slot in the draw bar; 10, 1edraft links; 11 12,- 13, 14, slots in the draft links, all but lll elonted; l5, a metallic compres sim block witua. lug seated within the endof 'the draw bar; 16, a hole therethrough; 17, a recess at one end oftheblock and within the'body thereof; 1 8, an upper 1nclixiedAfri'ctional surface; 19, s .lower inrs; 2l. the lever ends or handles;22, curved fric-,tional cnahion 38, the links remaining sulticnahsnrl'aces which engage thc :surfacel 18 and lll bounding the recess inthe compression block; 28 the jaws of the pincers; 24, re` oessos in thejaws; 25, a spring or s )rin s or cushion between the jaws; 26, holes ora fulcrum pin; S37,` the ulcrum pin passed through tie holes and withits ends located within the slots in the links and sills or supporls;28, the frictional surfaces at the ends of the jaws; .ll, a frictionplate; 30,'a bons upon the face of the plate;.3l l friction surfaces atthe'encl of the pinccrs Jaws; 32, lugs for supportuxg springs; 33, twosets of helical springs; 34. a follower block; 35, lu s sup-4 portingthe helical springs; 36, a hole t u'ongh l. the block; 37,11 key passedthrough the block and also through the slots in the links and i sills; aFiller block riveted to the sills and against which the follower blockrests in boiling; 39, a key meecd through the slot in the draw bar andlts ends located within thc slots of the links and sills or su ports;and -10 is a key assed through the Iliolo in the volnpreesion lock andits ends located and supported within the slots inthe links and sil s orstringere.

In practice the main parts of the gear ina he applied in connection withthe so-called draft timbers or sills of a car, all the keys to be flatinstead of round, and la spring or cushion 41 to be used between thelever ends.

A The several parte and elements of the coinbined dering` boing in therelative positions shown by the drawings, the mode of operation is asfollows: In towing the draw bar is advanced, carrying with it the linkswhich slide wer the ke 40 and fnleruinpin 2, and the follower lock andkey 87. As the draw bar is further advanced the cushions 83 arecompressed and the friction Iplate 29 is forced against the pincel-sjan-a ro alive to which they more in friotional contact and compress s.ring 25ms they turn in closing about the ulcrum pin. The lever ends ofthe piacere sinnlltaneonslv al'rproach ,each other and their frictionasurfaces travel downwardly upon .the inclined surfaces bounflin therecess in 4the compression block. n boiling the follower block isslationary and the draw bar, its key, tl1e co 1n pression block, theplacers, and the. friction plate are forced rearwardly against the '.Yb' rennen of the' resence therein o elongated slots. cn the cushion 38is present. the arrangement is auch that. the

' plate' the pl fulcrum pin can move about il rearwardl com ressmg thecushion and absorbing lig it shoe s before the pincers commence to turnil-out vthe fulcrum pin, then the lever ends und the inws commence totravel relntive to the frictionel surfaces lwith which they are incontact and at .the 'same time compress s ring 25. The operation is vthesame when t ic cushion' 83 is omitted and the plate end follower blockare in contactl exce t that the pincers iminediatel) commence to' rnabout the fulcrnni pin and compress the spring or cushion 25 and helever ends and Jaws travel relative to the frictional surfaces with'which they are in contact. ObviouslyJ the degree of pressure between thefrictionul surfaces may be regulated by theuse of springs or cushions 25of unequal resistance to com ression.

Wha. I claim is:

1. The combination in a draft and buing gear, of a draw bar; s.compression block; pincers; e cushion between tie jaws of the pincers; cfollower block located in the reiir o`f the Jincers; means for retainingthe several einents in their relative positions; und means fortransferring motion from the draw bar to the follower block in drawing.

2. The combination in a'draft and buiflng geur, of a draw bur; ecompression block; pincel-s; a cushionin connection with the incers; nfollower block; means for retain` nig the several elements in theirrelative ositions; and links for transferrin motion rom the draw bnr tothe follower lock' in drawing. y

3. The combination in a draft and boiling geur, of a draw bur; ecompression block; pincers; u cushion in connection with the pincers; afollower' block; keys and a fulcruni pin for retaining the severalelements in their relative positions; and means for transferring motionfrom the draw bar to the follower. block in drawing.

L :The combination in a. draft and buliing gear, of a draw bur' acompression block; pncers with a movable fulcrum; o cushion inconnection with the pincersa. friction a follower block; a cushionbetween ate and follower block; means fory retaining -rhe severalelements in their relative sitions; and means for transferrin motion omthe draw ber to the followeriloclt in drawing.

5. The combination in a draft and builing geur, of s. drmvbnr; acompression block; pincers with a movable fulci'uni; a. cushion inconnection with the pineeis; a friction plate' afollower block; acushion between the plate and follower block; s for re taining theseveral clemente in their relative sitions; and means for transferrimotion rom the draw bar to the follower lock in drawing.

C. The combiimtion in a. draft and buing geur, of a" draw bar ecompression block; pincers with a movable fulcrum; e cushion 4inconnection with the pincers' a friction platea follower block; n cushionbetween the plnte und follower block; ineens for retaining the severalelements in their relative positions; and links fortransferri motionfrom the drew bar to the. followei'gblock in drawing. l

7. The combination in n draft und buiing gear, of a draw bar acompression block; pincers with a movn'le fulcrum; :i cushion 1nconnection with the incers; n. friction plate' n follower block; ccushion between the plate und followeii block; keys for rctninmgtheseveralrelenients in their relative positions; and links withelongated slots for Ytransferring nie'tion from the draw bei' to.

the follower block in drawing.

8. The combination in-a draft und .buiiing gear, of a draw baijlacompression block;

pincers with a move fulcruin; a cushion between the jaws of the pincers;a friction plate' a. follower block' a cushion between the plate undfollower block' a filler block against which the follower block bears inboiling; means for retaining the several elements in their relativepositions; and means for transferring motion from the draw bar tothefollower block indraWing.

9. The combination in a draft and buling gear, of sills or supiportswith slots; a draw er; a compression lock; pncers'with a, fulcrum; acushion in connection with the incers; a follower block; slotted andvcys passed throu li the slots in the draw bar,'cornpress'on b ook.follower block, and sills or supports.

l0. The combination in a. draft and boiling gear, of sills or supgiortswith slots 5 ii draw bar; a compression lock; pince'rs withafulushion inconnection with the cruin' a c pinceis; n follower block' e friction.late; 4a cushion between the late undl llowerl block i slotted links; unkeys passed througlri the slots in the draw bar, lcompresion blocfollower block and sills er sup orte.

11. The .combination info dra 12. The combination in e dreigt. endbuiing l fear, of pincers having a comnion fulcrum ever ends and Jaws,and a. cushion between the laws.

and bulliiig gear, of supports*` a draw bar; piners hav- :y ing e commonful lll' 0 13. The combination in a draft and buliing ean of pincerswith lever ends and jaws, an

ment with frictional surfaces in connes tion with said lever en acushion in coi neet-ion with the j uws, an an element with a i frictonalsurface Yin connection with the jews.

iso

14. The combination in a draft and bullng with a movable fu cru'm pinhaving its ends gear, of incers, elements with frictional sur- .farvsat. oth ends of the pxncers, a cushion in uoi1|wct1on..w1th the pmcers,e. follower block, and a cushion between the follower block and thefric'tioiml element. at one end j ofthe Jinrers.

l5. 'Ihe combination in a draft. and bufi ing geur, of n compressionblock, with a movable fnlcrum; n cushion in connection with thepincel-s; and u friction plete or element atl-the end of the pincers.

16. The combinLtion in n-drnft and buffimir gear, of u compressionblock, pincrs wit-h a fulcrnm pininovnhle with the pincers, a cushionbetwer-the jaws of the pin-v cers, a friction plate, a follower block,and a cushion between the fllower block and 4friction plate.

1T. The combination in n draft und buffing gear, of u. compression blockwith u re-f` cess having inclined surfaces, pincers with lever ends andjaws, n cushionin connection"A with the jaws, and n.A friction plate incontuct with the jaws.

1S. The combination in u draft and butiingi rem', of su )ports withslots, pincel-s with. a fu cruxn 'Jin raving its ends located in theslots, a cus ion in connection with the pincurs` und frictional elementsnt thc ends of the pint-ors. 1H. lhc combination in a. draft :1ndbuffpincers ing gear, of vsnp orts with slots, pincers located in theslots, n cushion in connection with the pincers, and frictioxml elementsnt the ends of the incers.

E20. The combination in o. draft and bntfing gear, of supports withslots, a compression blo'ck, pincers, a cushion in connection with thepincers', n friction plateV a. followerv block, a cushion between thefo'llower block and plete, keys passed thronghthe follower block :inclcompression block and movnblc in the supports, und a movable fnlcruinpin foi-fthe pincrrs with its omis movable within the slots of thesupports.

21. The combination in a droit geur, of pint-ers having u common fnlcrnmand lever ends with n cushion between them.

22. The combination in n draftgeair, of pinrcrs havimr a common fulrrmnlever ends und jaws, um a cushion between the jaws.

23. The combination in a draft gear,4 of pincers havingr lever ends undjaws und a cushion between the lever ends and also bctween the jaws.

In testimonv whereof I affix my signature in presence o two witnesses.

MYERS A. GARRE'M.

`Wil nesses N. B. MAchivrroN, C. M. (fanmrrr.

